Comments - aldekotan

First of all I want to say thank you very much for your work. But... impressions of the game spoil three points:
1. Under the ground, I hear helicopters, birds and mutants. But they are on the surface. Is it generally fixable?
2. NPC sometimes start to ignore me and look at the clouds (several at once). When I approach, sharply turn and kill me. What's the problem here?
3. I didn't find the Greben's tasks on Yantar and the tasks at the Construction site level. What about them?
Thanks again